<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Not Found</title>
</head>
<body>
<h1>Oops!!! Not Found</h1>
<h2>这里什么也没有。。</h2>
<a href="/greeting">返回首页</a>
</body>
</html>